When opening the hole, start the motor first, and then push the push handle of the manipulator after the transfer is normal. Make it get appropriate propulsion force, and then pull the handle of the impactor to the working position. After rock drilling, the water valve can be opened to keep the gas-water mixture at an appropriate ratio. Carry out normal rock drilling work. When the advancement work causes the mast to move into collision with the drill holder, a drill pipe is drilled. To stop the motor and stop supplying air and water to the impactor, insert the fork into the drill pipe slot of the holder, reverse the motor and slide back to disengage the joint from the drill pipe, then connect the second drill pipe, and press Now you work in a loop.